A trailer is a vehicle that is pulled by a car and has no driving force of its own. It consists of a tractor and one or more trailers. Trailer is an essential type of highway transportation and an effective means to improve the economic benefits of transportation.
In terms of size, the width of trailers is usually 2.5 meters, but there are special 2.55 meters, 2.8 meters or 3 meters, the length of the standard is usually 13 meters, but also 10 meters, 11 meters, 14.6 meters, 16 meters or 17.5 meters.
So, how much does a large trailer cost?
According to the survey of Semi Trailer Manufacturers, the price of large trailers in the current market is between 350,000 yuan and 500,000 yuan, among which the price of tractors is about 250,350,000 yuan, and the price of trailer cars is typically about 100,000 yuan. Of course, the prices of different types of trailers are also different, as are the prices of skeleton cars, pallet cars and barreled cars. It also has to do with tires, axles, brake systems and other configurations.
What about the accessories on the semi? What should I choose?
1. Traction pin. It is mainly used to connect the semi-trailer and the tractor to realize the semi-trailer driving. At present, the traction pins on the market are mainly divided into 4 kinds, which are assembly 50, assembly 90, welding 50 and welding 90. Users can choose and buy according to different models and actual use conditions. The 90# traction pins for semi-trailers above 100t can normally meet the requirements.
2. Axle. It is an essential part of the vehicle chassis, mainly used for bearing and connecting wheels, and plays a key role in the process of vehicle load and power transmission. Domestic professional axle and do better brands are mainly Guangdong Fuhua, BPW (Meizhou), Shandong DARong, among which the most cost-effective DARong axle, is also one of the earliest mass production of integrated axle body axle enterprises, technology and strength are trustworthy.
3. Tires. The tire is an essential part of the vehicle and the ground contact, play a moderate impact, maintains the role of driving. If there is no wear-resistant, heat resistant, durable tire support, its safety performance and economic benefits are out of the question. The most commonly used semi-trailer is 11.00R20 steel wire tire and 12.00R22.5 vacuum tire. The brand recommended Michelin, saddle wheel De Yi, Chaoyang, Bridgestone, do a good job.
4. Wheel hub. Also called ring, ring, grunt and bell, it is the rotating part of the wheel core connected by the column of the tire inner profile wheel steel. Hub unit is a more precise part of the trailer, including bearings, nuts and numerous other parts, together with the axle and tires, together to support the wheel, recommended Zhumadian Huateng, Shuai Wei, Kangmai.
5. Suspension. It is a force transmission device assembly between the frame and the axle. The function is to transmit the force and force torsion between the wheel and the frame, buffer the impact of the road, reduce vibration, and ensure smooth driving of the car. Suspension can be divided into rigid suspension, single point suspension, air suspension and steel suspension. Rigid suspension is mainly used for low speed cargo axis low flat semi-trailer, single point suspension is mainly used in heavy duty vehicles, steel spring balance suspension is mostly used in ordinary semi-trailer, air suspension is mostly used in precision instruments or hazardous chemical transport.
6. Legs. It is mainly used to support the semi-trailer when the semi-trailer is separated from the tractor. It is located in the front end of the semi-trailer frame and is a semi-trailer supporting device. In the category can be divided into single action type leg, coupling type leg, aluminum alloy leg, hydraulic type leg, pneumatic type leg, pneumatic hydraulic combined type leg. Among them, the single action type of the most basic traditional leg, flat and concave and convex ground can be used; the connected leg is only suitable for smooth road surface; the main highlight of the aluminum alloy leg is lighter than the traditional leg, but the support force is insufficient when full load; hydraulic legs are suitable for the pursuit of efficient high frequency sling transport, but the weight is heavy, the cost is steep; pneumatic legs are also suitable for efficient sling transport. The weight is lighter than the hydraulic legs, but there are fewer maintenance points at present; pneumatic and hydraulic combined outrigger lifting efficiency is higher, but the structure is complex. If the technology is not mature, it is easy to lead to failure rate.